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Answer:

Superior mesenteric artery.

The primary source of energy for the body is a form of sugar called glucose. It travels to cells all throughout the body after being absorbed into circulation from the small intestine.

Other chemicals that enter the circulation through the small intestine include the following:

Proteins' building components are amino acids.

The lipids' building components are fatty acids.

minerals and vitamins

Water

In an adult, the small intestine is a muscular tube that is roughly 20 feet long. It is situated in the belly, above the large intestine, and below the stomach. The bulk of digestion and nutritional absorption from meals occurs in the small intestine.

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Answer:

Water puts pressure depends on their amount.

Explanation:

In the bottle, there is large quantity of water that put high pressure on the bag present at the side of the bottle that leads to swelling of the bag whereas, if the bag is present at the bottom not at the side and water is also present in large amount so more swelling of bag occurs so we can conclude that more water puts more pressure and less water puts less pressure.

The dichotomous key used to identify the antelopes might be based on the presence/absence of certain muscles, weight, etc.

A dichotomous key is a system to classify species and/or taxonomic groups by using two different choices.

For example, the presence/absence of certain physical features can be used to identify the antelopes.

Moreover, the threshold in certain features such as weight/height can also be used to classify species.

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Thinner membranes allow for a shorter diffusion distance which means a larger gas exchange within a shorter period of time and are overall, more efficient.

Because the respiratory membrane is so thin, the gases are able to easily pass from one structure to another. This process is further aided by the fact that carbon dioxide and oxygen are both lipid-soluble.

At the end of the bronchioles are tiny air sacs called alveoli. The alveoli, which are where the lungs and blood exchange oxygen and carbon dioxide during the breathing in and breathing out process, are both lipid-soluble.

Alveoli are very small organs. They are composed of alveolar tissue, but the alveoli themselves are tiny sacs clustered at the ends of the bronchioles.

Each alveolus is lined by simple squamous epithelium, which is extremely thin in order to allow oxygen diffusion while still forming an epithelial barrier between the outside air and the internal body fluids.

Due to the thinness of the respiratory membrane, gases easily pass from one structure to the next. The fact that both carbon dioxide and oxygen are lipid-soluble helps this process even more.

Thus, the respiratory membrane is made of two thin membranes from the alveolus and capillary walls.

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Oogenesis results in the production of one functional egg and several polar bodies that are eventually discarded, ensuring the preservation of cytoplasmic resources in the egg for successful fertilization and early embryonic development.

During oogenesis, the process of producing female gametes or eggs, the primary difference compared to males is the uneven division of cytoplasm. In humans, oogenesis begins during fetal development and continues throughout a woman's reproductive life.

In the ovary, oogonia (diploid cells) undergo mitosis to increase their number. One of the resulting cells becomes the primary oocyte, which enters meiosis I but pauses in prophase I until puberty. Each month after puberty, one primary oocyte resumes meiosis I and divides asymmetrically. The division produces a secondary oocyte and a small polar body, which contains a minimal amount of cytoplasm. The secondary oocyte then enters meiosis II but pauses again in metaphase II.

If fertilization occurs, the secondary oocyte completes meiosis II, yielding a mature egg (ovum) and another polar body. The mature egg contains the bulk of the cytoplasm and organelles necessary for embryonic development. The polar bodies, though non-functional, ensure that the cytoplasm is concentrated in the egg and help preserve the genetic material.

Overall, oogenesis results in the production of one functional egg and several polar bodies that are eventually discarded, ensuring the preservation of cytoplasmic resources in the egg for successful fertilization and early embryonic development.

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The results of the onion cell lab indicate that when placed in a hypotonic solution, the onion cells undergo changes in their physical appearance and characteristics.

After reading the paper, the conclusion should help the reader understand why your research is important to them.

A conclusion is a synthesis of key points, not just a summary of your points or a re-statement of your research problem.

In conclusion, the onion cell lab results show that when onion cells are placed in a hypotonic solution, their physical appearance and characteristics change.

Through osmosis, the cells absorb water and become turgid, causing the cell membrane to push against the cell wall. This can cause the cell wall to stretch and eventually burst, releasing the contents of the cell.

Thus, this can be the conclusion for an onion cell lab report (hypotonic).

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Answer:

The correct answer would be : option E.

Explanation:

Sphinx moth Xanthopan morganai is montypic genus of sphinx moth which has only one species which gives it as a name of morgan's sphinx moth found in east Africa and Madagascar.

This species of moth have a 8 inch long tongue which is characteristic feature of the species. The 8 inch long tongue gives them advantage in reaching to the nectar where no other pollinator can reach to their.

Thus, The correct answer would be : option E.

Answer: B

Explanation: im sorry if this is wrong

Have a great day.

Answer:

solution 1

solution 2

solution 3

In the given scenario, the regulation of blood glucose levels involves the hormones insulin and glucagon. This mechanism follows a negative feedback system.

When blood glucose levels are high, insulin is secreted, which allows cells to take up glucose from the blood, thus decreasing blood glucose levels. Conversely, when blood glucose levels are low, glucagon is secreted, stimulating the liver to break down glycogen into glucose and release it into the blood, increasing blood glucose levels.

When blood glucose levels deviate from the normal range, the body responds by secreting insulin or glucagon to bring the levels back to the normal range. The actions of insulin and glucagon are opposing and work to maintain the balance of blood glucose levels. As blood glucose levels increase, insulin is secreted to lower them, and as blood glucose levels decrease, glucagon is secreted to raise them. This feedback loop helps maintain homeostasis by keeping blood glucose levels within a certain range.

Therefore, the data demonstrate a negative feedback mechanism for the regulation of blood glucose levels.

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Answer:

adaptation

Explan

Answer: adaptation

Explanation:

Layers of the Earth.

From center to top layer:

The Earth is composed by four main distinct layers. They are, from deepest to shallowest: inner core, outer core, mantle and crust.

The inner core: Is made of a solid metal ball with a radius of 758 miles, it is located to 4,000 to 3,220 miles beneath Earth's surface, being extremely dense (made most of iron and nickel). It's almost as hot as the surface of the sun (9,800° Fahrenheit), and with extremely pressure. Some scientists suggests that exist an inner, inner core (consisting of iron, almost entirely);

The outer core: Also made of iron and nickel, but in liquid form. It's 3,220 to 1,790 miles below the surface. The heat of this layers comes most by the decay of uranium and thorium, that cause turbulent currents in this layer generating electrical currents forming the Earth's magnetic field;

The mantle: It's the thickest layer, starting a 18.6 miles beneath the surface. It is made mostly of iron, silicon and magnesium, being dense with solid and semi-solid consistency. In it's edges the temperature reaches the melting point of rocks, and the outermost zone is relatively cold and rigid;

The crust: It's is a extremely thin layer, cold and brittle compared to the other layers below. It's made of a lot of lighter elements as aluminium, oxygen and silica. The crust is made of a big puzzle of broken parts know as tectonic plates that can move with the time and climate events.

Cytochrome c (Cyt c) is a protein that surrounds the mitochondrial inner membrane. The location of Cyt c is in the intermembrane or intercristae part of mitochondria. It is one of many factors that are important for apoptosis.

There’s a stimulus to induce outer membrane apoptosis, then Cyt c mobilizes from CL, and after that Cyt c is released to the cytosol. Cyt c allows apoptosis-protease activating factor 1 for caspase-3 and caspase-9 to be matured.

Basically, Cyt c activates caspase. In this case, Cyt c is a stimulus. After that outer membrane will break to facilitate the mobilization of Cyt c to the cytosol. This is a process of a stimulus, protease, and also proteins.

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The question was incomplete. This is a general answer.

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I am not too sure but

As we know the immune system is a complex of cells, tissues, and organs working together to avoid disease, now there are several types of defense, the most simple and first to act are physical barriers like skin or hairs, this stop physically the advance of pathogens, therefore we can say that the correct answer is option C.

Answer:

pyrimid

Explanation:

Answer:

Fingerprints have developed - Second Trimester

The fetus can hear and see - Third Trimester

The heart beats for the first time - First Trimester

Nerve cells have developed - First Trimester

The sex can be determined - Second Trimester

Fat begins to develop - Third Trimester

The fetus starts to move - Second Trimester

Explanation:

Answer:

1) False

2) False

3) True

4) True

5) False

6) True

7) False

Explanation:

I think these are all correct! Can you please give me a brainly? Have an amazing day/night!!

Answer:

Explanation:

For organism to be described as a good disperser, it must possess some characteristics which includes:

Rapid growth with a short life span and early maturity

They must also have many small offsprings and with little parental care or protection

They are easily adapted to unstable environments and can be "pioneer" species.

They often undergo self fertilization and have large seeds etc

The alleles in heterozygous organisms that has no effecy on the phenotype are called recessive, since it has no power to determine the trait that is presented to the environment.

The eruption was preceded by a two-month series of earthquakes and steam-venting episodes produced by an injection of magma at shallow depth below the mountain.

A wave of diminishing pressure traveled down the volcanic conduit until it reached the underground magma reservoir. The magma reservoir then started to rise, produce bubbles (degas), and erupt explosively, which drove a Plinian eruption that lasted for 9 hours. Mount St. Helens's summit crater saw a steam-blast eruption recently.

An injection of magma at a shallow depth below the mountain caused an enormous bulge and a fracture system on Mount St. Helens' north slope before the eruption, which was preceded by a series of earthquakes and steam-venting episodes that lasted for two months.

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Answer:

Malleus

Explanation:

Malleus other words known as hammer is the bone connected to the eardrum

Answer:

The answer is B

Explanation:

This is because fungi has to be heterotrophs to exist.

Answer:

No because that is just one example, and a completely fictional example at that, used for entertainment.

Explanation:

Mutations could cause health problems and abnormalities that could prove fatal. Though there could be benefits, like immunities to diseases, inherited or contracted, just the opposite could happen as well. And even if some benefits could be gained, a whole new set of problems could result from that change that weren't there before.

Answer:

the sum of the environmental factors (such as drought, mineral deficiencies, and competition) that tend to restrict the biotic potential of an organism or kind of organism and impose a limit on numerical increase.

Answer:

5-phosphoribosyl-1-pyrophosphate to accumulate, PRPP will accumulate due to the inactivation of the enzyme glutamine-PRPP amidotransferase

Formylglycinamide ribonucleotide (FGAR) will accumulate due to inactivation of the enzyme formylglycinamide ribonucleotide amino transferase.

Xanthylate (XMP) will accumulates because of the inactivation of the GMP synthetase reaction.

Uridine 5'triphosphate (UTP), a nucleotide biosynthetic product as well as an intermediatein the synthesis ofCytidine 5'triphosphate will accumulate due to the inactivation of cytidylate synthetase.

Explanation:

The biosynthesis of nucleotides occurs by means of two pathways: the de novo pathways and the salvage pathways.

The de novo pathways of the synthesis of nucleotides begins with their metabolic precursors which include amino acids, ribose-5-phosphate, carbon (iv) oxide and ammonia.

The salvage pathways reuse the free bases and nucleotides from the breakdown of nucleic acids.

Glutamine analogs that irreversibly inactivate enzymes that bind glutamine will cause accumulation of intermediates in the nucleotide biosynthetic pathways.

Glutamine is used as the amino group donor in the first committed step of de novo synthesis of purine nucleotides. In this step, 5-phosphoribosyl-1-pyrophosphate, (PRPP) is converted to 5-phosphoribosylamine using the amino group of glutamine by the enzyme glutamine-PRPP amidotransferase. Inactivation of this enzyme will cause 5-phosphoribosyl-1-pyrophosphate to accumulate.

In the fourth step of the de novo synthesis of purine nucleotides, inactivation of the enzyme formylglycinamide ribonucleotide amino transferase will cause formylglycinamide ribonucleotide (FGAR) to accumulate.

In the biosynthesis of guanylate from Inosinate, the intermediate xanthylate (XMP) will accumulate due to inactivation of the enzyme xanthylate-glutamine amidotransferase.

In the de novo synthesis of pyrimidine nucleotides, Uridine 5'triphosphate (UTP), a nucleotide biosynthetic oroduct as well as an intermediate of Cytidine 5'triphosphate will accumulate due to the inactivation of cytidylate synthetase.

Carbamoyl phosphate is synthesized by the enzyme carbamoyl phosphate synthetase II using glutamine and bicarbonate and two ATP molecules. However, the other substrates of this enzyme do not accumulate.

The two methods that allow fish to maintain water balance in saltwater are pumping out salt through the gills and absorbing water into the body by osmosis.

In saltwater, the concentration of dissolved salts is higher in the surrounding water than in the fish's body cells. To maintain water balance, fish have developed two main methods:

1. Pumping out salt through the gills: Fish possess specialized cells in their gills that actively pump out excess salts from their bodies. This process helps maintain a lower salt concentration within the fish's body, preventing dehydration and maintaining water balance.

2. Absorbing water into the body by osmosis: Osmosis is the movement of water from an area of lower solute concentration to an area of higher solute concentration through a semi-permeable membrane. Fish have a protective layer of skin that allows water to be absorbed into their bodies while preventing the entry of excessive salts.

By absorbing water through their skin, fish replenish the water lost to the surrounding saltwater, helping to maintain their internal water balance.

These two mechanisms work together to enable fish to survive in saltwater environments. By actively pumping out salts and absorbing water, fish can regulate their internal salt concentration and prevent dehydration, ensuring their overall water balance is maintained.

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